Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\services\sppsvc] 'Start' = '00000002'
Malicious functions:
Executes the following:
- '<SYSTEM32>\slui.exe' -Embedding
- '<SYSTEM32>\sppsvc.exe'
- '<SYSTEM32>\Wat\WatAdminSvc.exe'
- '<SYSTEM32>\Wat\WatAdminSvc.exe' /run
- '<SYSTEM32>\tasklist.exe'
Modifies file system :
Creates the following files:
- %WINDIR%\ServiceProfiles\NetworkService\AppData\Local\Temp\Cab7445.tmp
- %WINDIR%\ServiceProfiles\NetworkService\AppData\Local\Temp\Cab7466.tmp
- %WINDIR%\Temp\tmp50CD.tmp
- %WINDIR%\ServiceProfiles\LocalService\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C24EC5BDAF13613245B4CECC3DE91DC6
- %WINDIR%\ServiceProfiles\LocalService\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C24EC5BDAF13613245B4CECC3DE91DC6
Deletes the following files:
- %WINDIR%\ServiceProfiles\NetworkService\AppData\Local\Temp\Cab7466.tmp
- %WINDIR%\ServiceProfiles\NetworkService\AppData\Local\Temp\Cab7445.tmp
- %WINDIR%\Temp\tmp50CD.tmp
Deletes itself.
Network activity:
Connects to:
- '20#.#6.232.182':80
- 'ct###.#indowsupdate.com':80
TCP:
HTTP GET requests:
- 20#.#6.232.182/fwlink/?Li###########
- ct###.#indowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?88##############
- 20#.#6.232.182/pki/crl/products/WinPCA.crl
- ct###.#indowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?3c##############
- 20#.#6.232.182/pki/crl/products/microsoftrootcert.crl
UDP:
- DNS ASK www.microsoft.com
- DNS ASK go.###rosoft.com
- DNS ASK ct###.#indowsupdate.com
- DNS ASK crl.microsoft.com
